Butterface describes a girl that when seeing her from behind, you think of committing crime, but after seeing her face, you think of self-defense.

I saw this hot chick walking in front of me, so I picked up my pace and caught up with her. When I looked back to check her out, my feet were busy peddling back. What a disappointment, she was a butterface.

Butterface, oh Butterface
I wish you would die
It’s really fucked up
To get my hopes up so high
With fucked up face – and bloodshot eyes
Hold the bag steady
So your face can’t scare the guys
Your body is banging, but your face makes me shout
Your front teeth are screaming “Let me the fuck out”
With Hair like brittle and breath like acid
You look like something
That crawled out of Lake Placid
That’s it for now
I have nothing else to say
Keep that face covered
It’s probably what killed Ray